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SN8F2280 参数 Datasheet PDF下载

SN8F2280图片预览
型号: SN8F2280
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器 [8-Bit Micro-Controller]
分类和应用: 微控制器
文件页数/大小: 163 页 / 3660 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
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SN8F2280 Series  
USB 2.0 Full-Speed 8-Bit Micro-Controller  
The UART transfer format includes “Bus idle status”, “Start bit”, “8-bit Data”, “Parity bit” and “Stop bit” as following.  
UART Transfer Format with Parity Bit  
UART Transfer Format without Parity Bit  
Bus Idle Status  
The bus idle status is the bus non-operating status. The UART receiver bus idle status of MCU is floating status and  
tied high by the transmitter device terminal. The UART transmitter bus idle status of MCU is high status. The UART bus  
will be set when URXEN and UTXEN are enabled.  
Start Bit  
UART is a asynchronous type of communication and need a attention bit to offer receiver the transfer starting. The start  
bit is a simple format which is high to low edge change and the duration is one bit period. The start bit is easily  
recognized by the receiver.  
8-bit Data  
The data format is 8-bit length, and LSB transfers first following start bit. The one bit data duration is the unit of UART  
baud rate controlled by register.  
Parity Bit  
The parity bit purpose is to detect data error condition. It is an extra bit following the data stream. The parity bit includes  
odd and even check methods controlled by URXPS/UTXPS bits. After receiving data and parity bit, the parity check  
executes automatically. The URXPC bit indicates the parity check result. The parity bit function is controlled by  
URXPEN/UTXPEN bits. If the parity bit function is disabled, the UART transfer contents remove the parity bit and the  
stop bit follows the data stream directly.  
Stop Bit  
The stop bit is like start bit using a simple format to indicate the end of UART transfer. The stop bit format is low to high  
edge change and the duration is one bit period.  
SONiX TECHNOLOGY CO., LTD  
Page 116  
Version 1.1  
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